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A driver applies brakes and slows down the velocity of the car from 50km per hour to 30 km per hour in 5 seconds. Calculate the acceleration |
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Answer» Answer: Step-by-step EXPLANATION: INITIAL VELOCITY , U = 50 KM/H FINAL VELOCITY ,V = 30 KM/H TIME TAKEN ,T = 5 SEC = 5/60*60 = 5/3600 = 0.0013 HRS ACCORDING TO NEWTON'S FIRST LAWS OF MOTION: V = U + A T 30 = 50+A*0.0013 -20 = A*0.0013 A = -20/0.0013 A = - 15,384.6 KM/H DECELERATION = 15,384.6 KM /H². HOPE THIS HELPS. |
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